Ok to me Cyclops is not dead this sounds crazy and all but if and a big if none of the OC comes back then what if Phoenix destroy him and his body is gone but she opened a time portal and it sent his mind threw time and space and his mind landed in his teenage body . When I heard about Professor X body being destroy but his mind being sent to his FC self and Phoenix sometimes opens time portals this idea pop into my head . I know some may not like it but just in case no OC there is this way just in case.